Match class

$match aggregation stage

Stage description

Filters the documents to pass only the documents that match the specified condition(s) to the next pipeline stage.

Examples:

1. Using SelectorBuilder query

Dart code:

Match(where.eq('author', 'dave').map['\$query']).build()

Equivalent mongoDB aggregation stage:

{$match: {author: "dave"}}

2. Using aggregation expression:

Dart code:

Match(Expr(Eq(Field('author'), 'dave'))).build()

Equivalent mongoDB aggregation stage:

{$match: {$expr: {$eq: ['$author', 'dave']}}}

https://docs.mongodb.com/manual/reference/operator/aggregation/match/

Inheritance

• Object
• AggregationStage
• Match

Constructors

Match(dynamic query)

Creates $match aggreagtion stage

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

build() → Map<String, Object>

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited